Edited snapraid.nix to get correct mounts.

deploy.sh

@@ -497,6 +497,7 @@ EOF
   if [[ "$CONTENT_DISK_NUMBER" -eq 1 && "$PARITY_DISK_NUMBER" -eq 0 ]]; then
     export j="1"
     export CONTENT_DISK_ID="${DATA_DISKS_ID[0]}"
+    if [[ "${DATA_DISKS_TYPE[0]}" == "HDD" ]]; then export ALLOW_DISCARDS="false"; else export ALLOW_DISCARDS="true"; fi
     (envsubst < "templates/nix-config/disks/content.nix") >> final-nix-config/etc/nixos/disks/disko.nix
     sed -i "s|/mnt/content-1|/mnt/data-storage|" final-nix-config/etc/nixos/disks/disko.nix
   # Mirror configuration
@@ -507,23 +508,42 @@ EOF
   # SnapRAID configuration
   elif [[ "$CONTENT_DISK_NUMBER" -gt 1 ]]; then
     # Enable SnapRAID
-    cp -avu templates/nix-config/disks/snapraid.nix final-nix-config/etc/nixos/disks/
     cp -avu templates/nix-config/disks/pcr-check.nix final-nix-config/etc/nixos/disks/
     sed -i "s|#    ./disks/snapraid.nix|    ./disks/snapraid.nix|" final-nix-config/etc/nixos/configuration.nix
+
+    MERGERFS_MOUNTS=""
+    SNAPRAID_CONTENT_FILES=""
+    SNAPRAID_DATA_DISKS=""
+
     j=0
     for i in $(seq 0 $(($CONTENT_DISK_NUMBER - 1))); do
       export j=$((j + 1))
       export CONTENT_DISK_ID="${DATA_DISKS_ID[${i}]}"
+      if [[ "${DATA_DISKS_TYPE[${i}]}" == "HDD" ]]; then export ALLOW_DISCARDS="false"; else export ALLOW_DISCARDS="true"; fi
       (envsubst < "templates/nix-config/disks/content.nix") >> final-nix-config/etc/nixos/disks/disko.nix
+      MERGERFS_MOUNTS+="/mnt/content-${j}:"
+      SNAPRAID_CONTENT_FILES+="      \"/mnt/content-${j}/snapraid.content\""$'\n'
+      SNAPRAID_DATA_DISKS+="      d${j} = \"/mnt/content-${j}\";"$'\n'
     done
     echo -e "\n✅ Generated $CONTENT_DISK_NUMBER data disk configuration(s)."
+
+    export MERGERFS_MOUNTS=${MERGERFS_MOUNTS%:}
+    export SNAPRAID_CONTENT_FILES
+    export SNAPRAID_DATA_DISKS
+
+    SNAPRAID_PARITY_FILES=""
     j=0
     for i in $(seq $CONTENT_DISK_NUMBER $((${#DATA_DISKS_ID[@]} - 1))); do
       export j=$((j + 1))
       export PARITY_DISK_ID="${DATA_DISKS_ID[${i}]}"
+      if [[ "${DATA_DISKS_TYPE[${i}]}" == "HDD" ]]; then export ALLOW_DISCARDS="false"; else export ALLOW_DISCARDS="true"; fi
       (envsubst < "templates/nix-config/disks/parity.nix") >> final-nix-config/etc/nixos/disks/disko.nix
+      SNAPRAID_PARITY_FILES+="      \"/mnt/parity-${j}/snapraid.parity\""$'\n'
     done
     echo -e "\n✅ Generated $PARITY_DISK_NUMBER parity disk configuration(s)."
+
+    export SNAPRAID_PARITY_FILES
+    envsubst < templates/nix-config/disks/snapraid.nix > final-nix-config/etc/nixos/disks/snapraid.nix
   fi
   # Close the disko.nix block
   cat <<'EOF' >> final-nix-config/etc/nixos/disks/disko.nix

templates/nix-config/disks/content.nix

@@ -12,7 +12,7 @@
                 initrdUnlock = false;
                 settings = {
                   keyFile = "/etc/secrets/disks/content-disk-${j}";
-                  allowDiscards = true;
+                  allowDiscards = ${ALLOW_DISCARDS:-false};
                 };
                 content = {
                   type = "filesystem";

templates/nix-config/disks/parity.nix

@@ -12,7 +12,7 @@
                 initrdUnlock = false;
                 settings = {
                   keyFile = "/etc/secrets/disks/parity-disk-${j}";
-                  allowDiscards = true;
+                  allowDiscards = ${ALLOW_DISCARDS:-false};
                 };
                 content = {
                   type = "filesystem";

templates/nix-config/disks/snapraid.nix

@@ -1,20 +1,5 @@
 { config, lib, ... }:
 
-let
-### --> SnapRAID disks research
-  contentDiskMounts = lib.attrsets.attrNames (
-    lib.attrsets.filterAttrs (name: value: lib.strings.hasPrefix "/mnt/content-" name) config.fileSystems
-  );
-  parityDiskMounts = lib.attrsets.attrNames (
-    lib.attrsets.filterAttrs (name: value: lib.strings.hasPrefix "/mnt/parity-" name) config.fileSystems
-  );
-  snapraidDataDisks = lib.lists.foldl'
-    (acc: path: acc // { "d${toString (acc.i + 1)}" = path; i = acc.i + 1; })
-    { i = 0; }
-    contentDiskMounts;
-### SnapRAID disks research <--
-in
-
 ### --> MergerFS setup
 {
   fileSystems."/mnt/data-storage" = {
@@ -27,7 +12,7 @@ in
       "cache.files=off"
       "moveonenospc=true"
       "category.create=mfs"
-      "srcmounts=${lib.strings.concatStringsSep ":" contentDiskMounts}"
+      "srcmounts=MERGERFS_MOUNTS"
     ];
   };
 ### MergerFS setup <--
@@ -35,9 +20,15 @@ in
 ### --> SnapRAID setup
   services.snapraid = {
     enable = true;
-    contentFiles = map (disk: "${disk}/snapraid.content") contentDiskMounts;
+    contentFiles = [
-    parityFiles = map (disk: "${disk}/snapraid.parity") parityDiskMounts;
+SNAPRAID_CONTENT_FILES
-    dataDisks = builtins.removeAttrs snapraidDataDisks [ "i" ];
+    ];
+    parityFiles = [
+SNAPRAID_PARITY_FILES
+    ];
+    dataDisks = {
+SNAPRAID_DATA_DISKS
+    };
   };
 ### SnapRAID setup <--
 }